Disintegrating machine



' EJR'OTH f j DISINTEGRAT-IING MACHINE Feb; 25, 1 930;

Filed Jan. 4; 1926 [710 2275 E Fat/1 UNITED; STATES PATENT OF IC Ci ERNST BOTI-LOF LAU'IAVVEBK, GERMANY I DISINTEGRATING' MACHINE Application filed January 4, 1926, Seria1 No. 79,159%, and in Germany February 16, 1925.

V invention relates to improvements in shown and aim in the appended claims toemdisintegrating machines. v brace all modifications falling fairly within This application is a continuation as to the'scope'of my invention.v n 1 I certain features thereof of my prior applica- What I claim is 5 tion', Serial No. 62,132, filed October 12, 1925. 1. In a disintegrating machine of the ty e Inmy prior application referred to I deset forth comprising a casing consisting of scribe the type" of the machine having a bitwo spaced conical shells revolving in op conical hollow casing composed of two coniposite directions each'of saidshells being pro- .cal shells disposed with their bases or flaring vided with radial and annular ribs on their j ends opposite each other and provided on inner faces, .saidradial ribs extending sub- 60" their inner surfaces with a number of radial stantially to the center of each shell. ribs for'the purpose set forth in my said '2. In a disintegrating machine of the type prior application. The two conical shellsreset forth comprising a casing consisting of volve in opposed directions and the coarse two spaced conical shells revolving in opmaterial supplied thereto is. reduced to a posite directionseach of said shells being'pro- 65 I powder owing only to the mutual rubbing vided with radial and annular ribs on their or grinding action of the material. V 7 V inner faces, the said annular ribs being'of less According to, the present inventionI proheight than the said radial ribs, said radial vide in addition to ,the said radial ribs anribs extending substantially to the center of nular ribs on the inner conical surfaces of each shell substantially as and for the pur- 70 the'two shells as will be'seen in the accompose set forth. 7

panying drawing forming a part of this Intestimony whereof I afiix my signature.

specification and illustrating for purpose of V ERNST ROTH exemplification, a preferred'form and man- I ner in which the invention may be embodied .1 n 75 and practised. i v a e v In the drawing A denotes the inner conical surface of the one shell shown, B are the I radial ribs and a" are the annular ribs. ar-

' ranged in concentric relationship. Only one v y i "g shell is shown in the drawings for theyother one required to forma'pair is of the very same construction and arrangement so that it seems unnecessary to illustrate the same.

, The ribs 1 are not so high as the ribs R or, j r V v 7 v in other words, thetop faces thereofliein a plane considerably below the top plane of-the ribs R. The purpose of the ribs 1' is to act in the manner of obstacles or resistances adapt- 40' ed to retain the particles and to prevent the I I same from moving too quickly in radial direction from the centre towards the periphery v of the casing. I

By thus retarding the movement of the ma 45.terial to be comminuted in radial direction 7 Y the rubbing and grinding action of the particles will be prolonged and a finer powder will be obtained. 7 I i I do not of course desire to be limitedto 50 the exact construction and arrangement V n "T 7 

